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How accurately should I store latitude and longitude?

...s like a radius query ("Answer features within a 0.5 mile radius of this point"), errors -- including truncation -- are magnified. If you need 6 decimal digits on the output of such a query, then the input should start with significantly more. Our shop tends to use DECIMAL(18,15). Our goal is ensure...
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Generating a random & unique 8 character string using MySQL

I'm working on a game which involves vehicles at some point. I have a MySQL table named "vehicles" containing the data about the vehicles, including the column "plate" which stores the License Plates for the vehicles. ...
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How to hide soft keyboard on android after clicking outside EditText?

...dren and seed recursion. if (view instanceof ViewGroup) { for (int i = 0; i < ((ViewGroup) view).getChildCount(); i++) { View innerView = ((ViewGroup) view).getChildAt(i); setupUI(innerView); } } } That is all, just call this method after you setC...
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Python and pip, list all versions of a package that's available?

...original yolk which ceased development in 2012. Though yolk is no longer maintained (as indicated in comments below), yolk3k appears to be and supports Python 3. Note: I am not involved in the development of yolk3k. If something doesn't seem to work as it should, leaving a comment here should not m...
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How to remove the querystring and get only the url?

...es may break when the querystring is missing or potentially mutate other/unintended substrings in the url -- these techniques should be avoided. A demonstration: $urls = [ 'www.example.com/myurl.html?unwantedthngs#hastag', 'www.example.com/myurl.html' ]; foreach ($urls as $url) { var_...
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Is there a way to create multiline comments in Python?

...to work with, containing the above features along with a lot more - direct integration with virtualenvs, and really good debugging, to say the least – Sbspider Apr 11 '14 at 2:42 2...
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Run an exe from C# code

... Example: System.Diagnostics.Process.Start("mspaint.exe"); Compiling the Code Copy the code and paste it into the Main method of a console application. Replace "mspaint.exe" with the path to the application you want to run. ...
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How do I use Java to read from a file that is actively being written to?

...ing ) { if( reader.available() > 0 ) { System.out.print( (char)reader.read() ); } else { try { sleep( 500 ); } catch( InterruptedException ex ) { running = false; } } } ...
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Android 4.2: back stack behaviour with nested fragments

...t for nested fragments see here . I've played around with it and found an interesting behaviour / bug regarding back stack and getChildFragmentManager() . When using getChildFragmentManager() and addToBackStack(String name), by pressing the back button the system does not run down the back stack t...
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Does Python have a ternary conditional operator?

... The point was if you want to perform additional evaluations after the conditional is evaluated, like adding a value to the result, you'll either need to add the additional expression to both sides (z = 3 + x if x < y else 3 + y)...